Prealgebra: Operations

Problem : 6×7×5 = ?

Problem : 5×(27×20)

Problem : 6×(2 + 10)

Problem : 5×876×156×7×4×0 = ?

Problem : 5×1×1×4×1 = ?

Problem : (5 + 4)×1 = ?

Problem : 5×78×0 = 0

Problem : 65×(9 + 10) = (65×9) + (65×10)

Problem : (6×5)×11 = (5×6)×11

Problem : (9×8)×3 = 9×(8×3)

Problem : 52×1 = 52